By Kim Eun-jung SEOUL, April 11 (Yonhap) -- As South Korea and the United States brace for a possible missile launch by North Korea, the communist nation appears to be moving several missiles repeatedly on its east coast in an apparent attempt to interfere with intelligence monitoring, sources familiar with the matter said Thursday.

According to intelligence analysis, the North has moved two Musudan intermediate missiles, which had been concealed in a shed in the eastern port city of Wonsan, in and out of the facility. Four or five wheeled vehicles, suspected to be so-called transporter erector launchers (TEL), were also spotted being moved around in South Hamgyeong Province.